Calculus 3 help?

4 ⤊

Find the distance from (3,7,-5) to each of the following:

a) the yz-plane

b) the z-axis

2006-06-16 11:25:39 · 3 answers · asked by pilotmanitalia 5 in Science & Mathematics ➔ Mathematics

3 answers

a) This is the straight line distance and the plane is where x = 0, so the distance is 3.

b) This is the equivalent to the 2D version of the distance from the origin so it's the sqrt(3^2 + 7^2) = sqrt(58)

2006-06-16 11:31:24 · answer #1 · answered by Arbitrage 7 · 4⤊ 0⤋

a) 3 (x coordinate)
b) sqrt(3^2+7^2)

2006-06-16 18:29:21 · answer #2 · answered by Milu 4 · 0⤊ 0⤋

a) 3
b) root 58

2006-06-16 18:30:32 · answer #3 · answered by Ian M 5 · 0⤊ 0⤋